Buy SpeedLube together with a cube and get a discount on SpeedLube.
By Mats Valk
The official replacement string for your YoYo!
GAN356 Air UM
1-2 drops, it's all you need to make your cube smooth fast and quiet....
the fifth generation.
You need to try this one.
Warning: Last items in stock!
You have probably already read about it, the reviews speak for themselves.